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System only travels
upward, but not
downward, and the
motor simply rotates
when you press the
DOWN button, but
motor does not
rotate when you press
the Down button
K) Error in the Down circuit on
the control unit
If necessary, actuate the manual
release.
Check the contactors and wiring
and repair if necessary.
The winchmotor does
not run
L) No power supply
a) Control unit has shut down
b) No power supply to the network
c) The phase sequence relay is blocking
the control unit
d) Supply cable between the mains
connection and the control unit
disconnected
a) Rotate emergency stop button
clockwise until it pops out
b) Clarify the cause and wait until the
current starts to flow again.
c) Rotate the phase inverter in the plug
for the controls through 180°
d) Check the supply and control cables,
fuses and connections or wiring on the
control unit and repair if necessary.
M) Incorrect connection,
e.g. neutral conductor missing
Compare the connection and wiring
diagram and have Blastrac perform a
conversion if necessary
N) Protective shutdown due to
overheating
a) One of the phases is missing
b) Engine cooling deficient
c) Over or undervoltage
a) Check/Repair the fuses, leads and
terminals
b) Clean the motor hood and check for
damage that prevents the fan rotating
c) Measure voltage and power
consumption on the motor when subject
to a load and increase the number of wire
rope cross-sections if necessary
O) Brake does not open (no apparent click
when powering up/down)
a) Defect on the power line, coil or brake
rectifier
b) Worn brake rotor
a) Have an electrician check the supply
cable, brake coil and rectifier, and repair
or replace if necessary.
b) Send the hoist for repair
Motor hums loudly or
the rope drive makes a
grinding sound,
although both upward
and downward travel is
possible.
P) Overheating
For individual causes and how to
troubleshoot them, see Item N).
Q) Dirt in the rope drive:
Continued travel may cause damage to
the rope and rope drive
Replace the hoist immediately and have it
inspected/repaired by Blastrac or an
authorized hoist service/repair shop
